Kimi K3's ~3T parameters spread across 59 Cerebras WSE-3T wafers, weights stay resident

petrusenko_max · x · 2026-10-26

Cerebras detailed how a 3T-parameter Kimi K3 model maps onto 59 WSE-3T wafer-scale chips: two linear-attention layers per wafer (35 wafers) and one dense layer per wafer (24 wafers), with 4-bit weights and remaining SRAM holding an 8-bit KV cache. The key design choice: weights stay resident on-wafer, and only activations cross between wafers.

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